Daily Trivia

Born to rock

International Rock Day, observed on 13 July, celebrates the geological building blocks beneath our feet and the stories they preserve. From ancient tools to towering mountains, rocks reveal clues about shifting continents, changing climates and the evolution of life over millions of years. Few places showcase nature's artistry as vividly as Antelope Canyon on Navajo Nation land in Arizona, seen in today's image. Formed as flash floods gradually eroded Navajo Sandstone over thousands of years, the canyon's graceful, curving walls showcase the slow but relentless force of nature.

Born to rock
© Mark Skalny/Getty Images
2026-07-13 en-CA Jul 13, 2026

Which natural process shaped Antelope Canyon's walls?

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